I'm buying a new MBP soon (when the new ones are released). The 17" model. Now I need some peripherals, gadgets and whatnot. 1) For a mouse, I had this in mind: Kensington SlimBlade Trackball Mouse 2) I'd like to protect my machine as much as possible, but I don't want an ugly hardcase around it. Can anyone recommend me a good product? (maybe a transparant skin or a good sleeve?) 3) What useful things can I get for the Expresscard slot? 4) I need a good backpack, because I will be taking the MBP to school everyday. 5) If you got anything else in mind that I would possibly like to have, don't hesitate to post it in here. Thanks in advance!